Apparatus for treating tubular fabric



1.1.8113115. APPARATUS FOR TREATING TUBULAR FABRIC.

APPLICATION FILED MAR. 5, 1913.

Patented Aug. 22, 1916.

2 SHEETS-SHEET l.

I.l A. SUBERS.

APPARATUS FOR TREATING TUBULAR FABRIC.

APPLICATION FILED MAR. 5,1913. 1,195,414. PmenmdAug. 22,1916.

2 SHEETS-SHEET 2.

/Z/JZE55ES.- v .fm/522.22721 @wf/4W I @7% 2% y 5 kf' if@ y ffy originni application nina :une 1s, 1912,

i a 1 -1 .a n a. I 5 q LAWRENCE-A. sUBERs,

OIF CLEVELAND, OHIO.

APPARATUS FOR 'IREA1I1\TGr TUBULAR FABRIC.

To all 'whom it may concern.'

Be it known that I, LA-WRENCE A. SUBERs, a citizen of the United States, and resident of Cleveland, inthe county of Cuyahoga and 'State of Ohio, have invented certain new and useful Improvements in Apparatus for Treating Tubular Fabric, of which I hereby declare the following to be a full, clean-and my application filed June 18, 1912bearing Serial No. 704,409. t

The objects of the inventlon are to provide an automatically operating machine for interwinding and laminating fibrous bands (such as described in my previously issued Letters Patent Nos. 1,024,040, 1,017 ,271, andv i contact with the liquid rubber; Fig. 3 is a 1,021,104,) which are treated and coated with liquid rubber or other adhesive substance after being wound upon a stationary mandrelto form a laminatedcohesive interwound fabric.

This improved vmachine is particularly dey signed to produce a tubular laminated fabric of double thickness with selvage edges, this fabric being used for various purposes respectively,4 such as conduits, pneumatic tire fabric or inner linings for the same, or belting, as may be desired. i

By the action of the machine the fabric is first constructed intubular form then flattened to produce a Isheet; of fabric with selvage edges.

The. machine includes a series of vreels ro-` tatable in alternately opposite directions about astationary mandrel and carrying rotatable spools upon which the fibrous bands are stored, as described in the aforesaid application Serial No. 704,409.

The invention provides for treating the interior of the tubular fabric on the mandrel with liquid rubber or other adhesive material under pressure, for evaporating the solvents therein by means of an encompassing chamber wherein a predetermined degree of heat and percentage of vacuum are maintained, and also for using compressed air to force the rubber through the hollow mandrel so as to impregnate the fabric therewith.

It also provides adjustable gates or 'jaws for the vacuum chamber where the fabric enters and leaves.

It also provides rotatmg, compressing, and

Specication of Letters Iatent.

Patented Ang. a2, 191e..v

Serial No. 704,409. Divided and this application led March 5, 1913. Serial No. 752,024.

pulling nous for pulling the fabric from the mandrel 1n a' iattened state.

The invention also comprises the combination and arrangement of parts and construction of details as hereinafter described,

, edges and shows the added devices for coating theinterior of the fabricwith rubber, and the .vacuum and heat providing chamber for eliminating the solvents therefrom;

Fig. 2 is a longitudinal central section of a modied form of mandrel which may be employed for the double thick fabric and which offers little resistance to its movement thereon and exposes a large amount of surface to transverse section of the lmandrel on line Fig. 2; Fig. 4 is a transverse section of the mandrel on line j-j, Fig. 1', showing the movable gates which substantially exclude theJ air from the vacuum chamber, in which the volatile solvents are evaporated lfrom the adhesive coatings; Fig. 5 is a similar view of the outer gate through which the flattened fabric issues;.Fig. 6 is a plan view of the mandrel showing' its support and the means for supplying liquid rubber or other air from the vacuum chamber, for supplying heat thereto, and for supplying compressed air to expand the tubular fabric and to assist in its movement along the mandrel; Fig. 7 is aside elevation of the vacuum pump showing a portion of the vacuum chamber; Fig. 8 is an elevation'of an air pump arranged for supplying compressed air to the' mandrel and for supplying pressure to a. tank containing rubber.

Ther construction of the reels is shown and described in the parent application. The reels are conveniently arranged in pairs, those in the first pair being shown at B and B and those in the second pair at B2 and B3. The reels in each pair are provided with hubs one of which is sleeved over the other and both encircle the mandrel. These hubs are mounted in the standards S.

The hub B6 is sleeved over the hub B7 in the second pair of reels, see Fig. 1. A similar construction is employed with the rst pair of reels.

The reels in each pair are rotated in oppolso adhesive material thereto, for exhausting the site directions to each other. l Those in the.

irst pair B and B are rotatel by means of beveled gears B8, B9 operated to revolve in4 set, and upon these spoolsthe fibrous bands' 1'5 X, X are wound.

As the bands are pulled off from the spools on the revolving reels as described in the aforesaid application, they are guided lto their respective places by means of roll-4 20 ers F, F mounted upon adjustable stands F', F upon annular brackets F2, F2, secured to their respective reels and then pass over additional rollers F3 arranged to guide the bands into a horizontal position, thence the ..25 fabric bands, except those from the last lreels, pass through guiding iattened tubes F1,"F1 to the forward end of the mandrel. These 4tubes are supported for convenience "upon a series of cylinders G, G, and G2 which. are attached totheir respective reels by means of arms G3, G3 at the rear ends.

At the front. ends the rings'H, H', H2,

are concentrically arranged within the last reel and are respectively attached to a set of cylinders G2G', land G, at their lforv ward ends and also a ring H3 attached to l the mandrel engages the interior of cylinder G. These rings are perforated for the passage of the fabric bands, and arms respectively attached to the forward ends ofthe cylinders G, G', and downwardly `turned` -a'rms H8, H, and H10, provide supports for I Vthe guide rollers H11, H11, which-,guide, the

fabric bands to theirpredetermined position on the mandrel. The annular bracket .F2 upon the last reel lBa is also provided with downwardly turned arms H11, H12, 'l upon which are mounted the guide `rollers 7 H11, H11, for guiding the fabric bands to their .respective placeupon the mandrel.

In the aforesaid former application it is describedhow a two-ply laminated fabric composed of interwound laminated fibrous bands treated with adhesive material is conl structed resulting in atubular formation of the same.

lIn Figs. 1 to 8 inclusive'is shown'the machine arrangedA to form a fiat fabric of double thickness and having selvage edges, the tubular laminated cohesive interwound fabric being treated interiorly with liquid .rubber or other adhesive material and V doubled in thickness by flattening the same.

In these views reels, spools, and guiding and cohesive interwound fabric are substantially the same as previously described in the application in Ser. No. 7 04,409, butno cutting disk and no lining of Holland cloth for the mandrel is employed.

-In addition to the vacuum and heating chamber for evaporating the solvents in the adhesive material described mechanism a is employed, and compressed air is used to 1 assist in releasing the fabric from the-man d'rel. The hollowmandrel is made in two .parts The part R is secured at one endin the bearings A of the standard'A.2 andthis box R" for the passage of a pipe V7 for rubber, and at. the other end the mandrel is provided with' perforations R2, R2, for the issuance of compressed air, and near this extremity the mandrel is provided with an exterior annular -ring R1, and also .is

end is closed and-provided with a'stuing j threaded at this end at R1 to receive the second part of the mandrel R5. The part R5 is also hollow'and is provided with annular depressions R", R and perforations R1, R1, for fthe passage of liquid rubber or other adhesive material,l and is screwed into the end R1 of the first part of the mandrel. This end of the part4 R5 is closed and tapped to receive the rubber pipe V1, while-the outer end R8 isiattened and perforated to -allow the interior of the fabric to be further coated. A pipe V for compressed' air is connected to the mandrel R at R.

The second part of the mandrel R1? is inclosed in a vacuum and heating .-chamber U, heat being supplied by steam pipes-U or by any other desired means. rlhe air is exvpractically excluded by jaws U1, and U11, j v made adjustable by screws U12, and slots. U13, and pressed .against the fabric by arms U12, springsUn, and screws U1. Access to v the chamber is gainedvby the door plate U11, held by locking handles U18 and studsy U11. Glass covered openings U10 render the in- `terior visible.

The `fabric is pulled from thel mandrel 'by pulling and flattening rollers L,'L and L',

L', which are mounted in the housing frame L2 which is providedwith spring pressed v adjustable Abearings L3, L3, by means of which the pressure can be adjusted, and the `pulling rollers are operated by means of gears O and O,'bevel.gears O2, O11, and i shafts O1, O5 and worm and` worm wheel O6, O1, mounted inthe bracket 0, and by shaft Os. (See Fig. 1.)

through the end of th ing rolls collapse the tubular pipe V Compressed air is furnished by the air compressor V connected to the mandrel by and is supplied to the rubber tank V3 by the pipe V4 and acting on the piston V5 forces the liquid rubber or other adhesive material through the pipe VG to .the pipe V7 in the hollow mandrel R. A gage V8 registers the air V9 can be used to raise the piston V5 when the rubber tank is empty. A valve V10 closes this pipe when rubber is being forced from the tank. Y

As the fabric is formed on the mandrel R it is expanded by the compressed air acting through the perforations R2 and by the annular ring R3, thus being practically released f rom adhesion to the mandrel, and is the perforations R2 e mandrel RS, to thoroughly coat and impregnate the interior of the fabric, the solvents being quickly evaporated by the predetermined amount of heat and percentage of vacuum maintained in the chamber. The pulling and compressband into a solidsheet of double thickness with selvag'e edges. A

Fig. 2 shows the mandrel adapted for use in forming a double layer fabric with selvage edge, and similar to the mandrel R except that its outer portion is flattened, and that it is not necessary to air. The mandrel consists The closed at the of two parts T part T is cylindrical, hollow, end T2 to receive the pipe V for rubber and threaded at T?- to receive theV flattened part T which is tapped to receive the pipe V7. The part T is also hollow,

grooved, top and bottom, to reduce the fric-v tion of the fabric thereon, Tt, T4 for rubber or other adhesive material, and also at the end T5. The grooved part of the mandrel lies wholly in the vacuum chamber V and the rubber emerging from the perforations T4, T4 and from the end T5 coats the interior of the fabric.

I have shown in the drawings and particularly described in the specification certain preferred embodiments of my invention, but 'these embodiments are to be re.- garded as illustrative only, and I do not intend to limit myself to the details thereof.

It is obvious that my invention is capable and perforated at scope of the claims.

mandrel fixed at pressure used. A secondary pipe outer and inner portions, each vided with openings therethrough, a pipe extending through the inner portion and into the outer portion for supplying fluid coating material to the outer portion, and a with thel inner portion flattened,

2. In a fabric making machine, the combination with a mandrel and a combined vacuum and drying chamber, inclosing a portion of said mandrel, of resilient air exvacuum chamber through one of said openings, and movable and spring pressed gates encircling said opening and adapted to exclude air from said chamber.

4. In combination, in a fabric making machine, a mandrel fixed at one end, a vacuum chamber having an opening through which ithe forward extremity of the mandrel extends, a series of gates encircling the mandrel, in said opening, and means for controlling the pressure upon said gates.

An apparatus for treating tubular fabric comprising in combination, a hollow mandrel fixed at 'one end and formed in inner and outer portions, each of said portions being provided with openings therethrough, means for supplying compressed air to the inner portion, and means for supplying the outer portion with an impregnating liquid.

6. An apparatus for treating tubular fabric comprising in combination, a hollow mandrel fixed at one end and open at the other end, means for drawing fabric over said mandrel, and means for forcing a coating fluid through the open end of said mandrel into the interior of said fabric.

A mandrel for coating fabric having a free end portion of flattened cross section and provided with thickened edges, the area of said portion between said edges having apertures therein.

In testimony whereof, I hereunto set my hand this 25th day bf February 1913.

LAWRENCE A. SUBERS.

portion pro-y 

